Sound attenuation device



FIG. 1 is a perspective view of the sound attenuation device of the claimed device;

FIG. 2 is a left side view of the sound attenuation device of FIG. 1;

FIG. 3 is a right side view of the sound attenuation device of FIG. 1;

FIG. 4 is a back side view of the sound attenuation device of FIG. 1;

FIG. 5 is a front side view of the sound attenuation device of FIG. 1;

FIG. 6 is a bottom view of the sound attenuation device of FIG. 1; and,

FIG. 7 is a top view of the sound attenuation device of FIG. 1.

The broken lines in FIG. 1 are included for the purpose of illustrating an element of the article excluded from the claim, with the lines themselves and the area within forming no part of the claimed design. 

CLAIM I claim the ornamental design for a sound attenuation device, as shown and described. 